CN102817692B - Engine thermal management system - Google Patents
Engine thermal management system Download PDFInfo
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- CN102817692B CN102817692B CN201110387682.2A CN201110387682A CN102817692B CN 102817692 B CN102817692 B CN 102817692B CN 201110387682 A CN201110387682 A CN 201110387682A CN 102817692 B CN102817692 B CN 102817692B
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Abstract
The invention relates to an engine thermal management system. The system comprises an upper computer and an engine electronic control unit (ECU), the upper computer is connected with an in-vehicle controller area network (CAN) bus, the engine ECU is connected with an engine water temperature sensor, an intercooler sensor and a vehicle speed sensor in a sampling mode, the engine thermal management system further comprises a thermal management ECU which is connected with the in-vehicle CAN bus, the thermal management ECU outputs a pulse width modulation (PWM) signal to be connected with a group of cooling fans in a driving mode, the group of cooling fans is used for cooling engine water temperature and an intercooler, and the thermal management ECU is further connected with an alarm device in a drive control mode. According to the engine thermal management system, the heat-dissipating mode of the vehicle intercooler is changed from mechanical power type to electronic type, the operation of the cooling fans can be automatically controlled according to the temperature information of the engine, and the engine is maintained in the optimum working temperature.
Description
Technical field
The present invention relates to a kind of engine thermal management equipment, belong to engine thermal administrative skill field.
Background technique
Motor conventional chilling constituent adaptive capacity to environment is poor, and summer easily causes engine high-temperature, and causes engine low temperature winter, affects the working efficiency of motor.The cooling method comparatively backwardness of vehicle intercooler, mostly be and drive belt from engine output shaft, belt is lowered the temperature to radiator by the large-scale cooling fan of belt drive on jack shaft again, as long as so engine running, fan is running just, fan running, hardly by other factor controllings, in a lot (meet that red light waits on the way, vehicle pull-in, parking) state, causes larger energy dissipation.
Summary of the invention
The object of this invention is to provide a kind of engine thermal management system, automatically the rotating speed of radiation fan can be controlled according to engine temperature and intercooler air inlet situation, make engine cooling water temperature and intake temperature be stabilized in optimum working temperature, thus make effect of motor ratio reach best.
The present invention provides a kind of engine thermal management system for solving the problem, a kind of engine thermal management system, described engine thermal management system comprises and is connected to upper-position unit in car in CAN and Engine ECU, described Engine ECU sampling is connected with engine water temperature sensor, intercooler sensor and vehicle speed sensor, described engine thermal management system also comprises a heat management ECU be connected in described car in CAN, it is the radiation fan that the gentle intercooler of engine water is lowered the temperature that this heat management ECU output pwm signal drives connection one group to be used for, described heat management ECU also drived control is connected with a warning device.
Described one group of radiation fan comprises four radiation fans for lowering the temperature for engine water temperature and two radiation fans for lowering the temperature for intercooler.Described heat management ECU be also provided with for subsequent use, for the collection of simulant signal port of sample connecting engine cooling-water temperature sensor and intercooler sensor.
Described upper-position unit is provided with for record, stores user's setting, and described user's setting is transferred to the user interface of heat management ECU by CAN, and the startup that described heat management ECU arranges described each radiation fan according to described user stops parameter.Described time-delay closing time when starting that to stop parameter comprising the start-up temperature of described each fan, standard-sized sheet temperature and the speed of a motor vehicle be zero.
Vehicle intercooler radiating mode is electronic type by mechanical power type by the present invention, and electronic fan (and controller) volume is little, and save the space in engine compartment, noise is low; Structure is reliable, easy to manufacture; Owing to automatically can control the running of radiation fan according to the temperature information of motor, make engine temperature be stabilized in optimum working temperature, thus make effect of motor ratio reach best, reduce oil consumption, improve engine thermal efficiency, extend engine life, the discharge of decreasing pollution thing.And owing to being provided with the corresponding interface open to user, the startup changing radiation fan can be needed to stop parameter according to user.
Accompanying drawing explanation
Fig. 1 is the engine thermal management system block diagram of embodiment 1;
Fig. 2 is the heat management ECU main program flow chart of embodiment 1;
Fig. 3 is the heat management ECU communicating interrupt flow chart of embodiment 1;
Fig. 4 is the heat management ECU detection alarm function flow chart of embodiment 1;
Fig. 5 is the system block diagram of embodiment 2;
Fig. 6 is the Interruption flow chart of embodiment 2.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
Embodiment 1
As Fig. 1, for the vehicle with CAN net, its engine thermal management system builds on original vehicle electric control system basis.Original vehicle electric control system comprises CAN, CAN is equipped with upper-position unit and Engine ECU, Engine ECU is connected with vehicle speed sensor (belong to prior art above, repeat no more).On this basis, at car intrinsic motivation and intercooler relevant position, engine water temperature sensor and intercooler temperature transducer are installed, these two kinds of sensors are also connected in Engine ECU, Engine ECU carries out A/D conversion to two kinds of sensor output signals, data after conversion are sent in CAN, taken by the heat management ECU be connected with bus, after Treatment Analysis, drive one group of corresponding radiation fan, in the present embodiment, this group radiation fan comprises the fan of four corresponding motors and the fan of two corresponding intercoolers.
Upper-position unit is provided with for record, stores user's setting, and described user's setting is transferred to the user interface (software) of heat management ECU by CAN, and the startup that heat management ECU arranges each radiation fan according to described user stops parameter.Time-delay closing time when these start that to stop parameters comprising the start-up temperature of each fan, standard-sized sheet temperature and the speed of a motor vehicle be zero.For example, certain fan corresponding, its temperature that can start is T, and the temperature of standard-sized sheet (peak output) is T1, and by these temperature values input user interface, heat management ECU will control this fan according to these temperature parameters.The speed of a motor vehicle be zero the time-delay closing time refer to, when vehicle stop state, a period of time that fan works on can be made, this time length by user according to energy-conservation with security situation synthetic setting.
According to the sensor information come from CAN, heat management ECU makes one, several or whole radiation fan is with the speed operation corresponding with pwm signal.What heat management ECU exported is pwm signal, pwm signal outputs to fan governor (not shown in FIG.), fan governor drives respective fans, PWM is adopted to control to realize the electrodeless variable-speed of fan, thus regulate the temperature of motor, intercooler, make motor and intercooler temperature stabilization in optimum working temperature.
Heat management ECU is control connection warning device also.Fig. 2,3,4 shows main program and the correlator program circuit of heat management ECU.In main program, first initialization detects whether have warning later, if not, carries out fan control, if there is warning, reports current state.CAN communication receives CAN message in interrupting, and carries out differentiating and store using for main program.In addition, in the present embodiment, if CAN message is lost, in order to ensure safety, whole fan full speed running is made.CheckAlarm() be detection alarm function.
Embodiment 2
As shown in Figure 5, this enforcement is applicable to the vehicle without CAN net, now engine water temperature sensor and intercooler temperature transducer are all connected on heat management ECU, so heat management ECU should have corresponding AD interface and collection of simulant signal port, Fig. 6 is the flow process adopting timer interrupt mode to carry out AD collection.In embodiment 1, reserve these AD interfaces with for subsequent use also can to heat management ECU.
In the present embodiment, heat management ECU directly carries out fan control according to institute's Information Monitoring, and detailed process repeats no more.
Claims (5)
1. an engine thermal management system, described engine thermal management system comprises and is connected to upper-position unit in car in CAN and Engine ECU, it is characterized in that, described Engine ECU sampling is connected with engine water temperature sensor, intercooler sensor and vehicle speed sensor, described engine thermal management system also comprises a heat management ECU be connected in described car in CAN, this heat management ECU output pwm signal, pwm signal outputs to fan governor, it is the radiation fan that the gentle intercooler of engine water is lowered the temperature that fan governor drives connection one group to be used for, described heat management ECU also drived control is connected with a warning device, PWM controls the electrodeless variable-speed that can realize fan, thus regulates the temperature of motor, intercooler, makes motor and intercooler temperature stabilization in optimum working temperature, CAN communication receives CAN message in interrupting, and carries out differentiating and store using for main program, if CAN message is lost, makes whole radiation fan full speed running.
2. a kind of engine thermal management system according to claim 1, is characterized in that: described one group of radiation fan comprises four radiation fans for lowering the temperature for engine water temperature and two radiation fans for lowering the temperature for intercooler.
3. a kind of engine thermal management system according to claim 1, is characterized in that: described heat management ECU be also provided with for subsequent use, for the collection of simulant signal port of sample connecting engine cooling-water temperature sensor and intercooler sensor.
4. a kind of engine thermal management system according to claim 1, it is characterized in that: described upper-position unit is provided with for record, stores user's setting, and described user's setting being transferred to the user interface of heat management ECU by CAN, the startup that described heat management ECU arranges described each radiation fan according to described user stops parameter.
5. a kind of engine thermal management system according to claim 4, is characterized in that: described time-delay closing time when starting that to stop parameter comprising the start-up temperature of described each fan, standard-sized sheet temperature and the speed of a motor vehicle be zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110387682.2A CN102817692B (en) | 2011-11-30 | 2011-11-30 | Engine thermal management system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110387682.2A CN102817692B (en) | 2011-11-30 | 2011-11-30 | Engine thermal management system |
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| Publication Number | Publication Date |
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| CN102817692A CN102817692A (en) | 2012-12-12 |
| CN102817692B true CN102817692B (en) | 2015-06-24 |
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| CN201110387682.2A Active CN102817692B (en) | 2011-11-30 | 2011-11-30 | Engine thermal management system |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266946B (en) * | 2013-05-10 | 2016-06-08 | 贵州航天凯宏科技有限责任公司 | engine active temperature control system and control method thereof |
| CN104298280B (en) * | 2014-09-01 | 2017-03-01 | 潍柴动力股份有限公司 | A kind of engineering machinery halt control method and device |
| CN105041445B (en) * | 2015-06-08 | 2017-11-28 | 厦门金龙联合汽车工业有限公司 | A kind of intelligent control method of cooling system of vehicle |
| CN106050389A (en) * | 2016-06-30 | 2016-10-26 | 苏州工业园区驿力机车科技股份有限公司 | Intelligent engine cooling system with stepless speed change device |
| CN111225538B (en) * | 2018-11-23 | 2022-09-06 | 珠海广通汽车有限公司 | Control method of heat dissipation system |
| CN110761886A (en) * | 2019-11-26 | 2020-02-07 | 中汽研汽车检验中心(武汉)有限公司 | Cooling system and engine test tool |
| CN111120070B (en) * | 2019-12-13 | 2021-07-20 | 潍柴动力股份有限公司 | Correction method and device for electric control fan control, storage medium and electronic equipment |
| WO2024092668A1 (en) * | 2022-11-03 | 2024-05-10 | 华为技术有限公司 | Electronic control unit, control system, and terminal |
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| CN201202669Y (en) * | 2008-01-04 | 2009-03-04 | 广州大华德盛科技有限公司 | Hydraulic drive fan controller |
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| US5307644A (en) * | 1992-03-26 | 1994-05-03 | Ford Motor Company | Method and electronic device for controlling engine fan |
| CN101694176A (en) * | 2009-10-23 | 2010-04-14 | 苏新页 | Electrothermal speed controller of silicon oil fan |
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| CN102817692A (en) | 2012-12-12 |
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